Mechanical movement



Dec. 14 1926;

F. O. FARWELL MECHANICAL MOVEMENT Filed March 25,

1924 2 Sheets-Sheet 1 gvmwnl'oz (1H0: new

Dec. 14 1926.

F. O. FARWELL MECHANICAL MOVEMENT Filed Meir-ch 25, 1924 2 Sheets-Shae Patented Dec. "14, 1926.

u re sires FAY ,o. FARWELL, or rrornno, 1110, ASSIGNOR "ro me DURA COMPANY. or TOLEDO, 011m, A COBPQRATION or DELAWARE. I

1 MECHANICAL MOVEMENT..

Application filed March25,'1924. vSeriaLNo. 701,728.

The invention relates to a novel form of mechanical movement including a driving gear and a driven gear, mounted upon parallel axes and having intermeshing teeth,

so disposed and arranged, as'to effect free rotation of both gear elements in both directions when actuating power is applied to the driving gear, andto produce an effective locking of both gears'against rotary movement, when the actuating power is relieved and the reaction of the load on the-driven gear tends to r verse the operation, of the gears, the locking being eflected by means of an automobile body showing the invention applied to the-window of the door thereof.

Fig. 4 an enlarged "fragmentary sectional elevation corresponding to the upper portion of Fig. 2. 1

Fig. 5 is a fragmentary plan yiew of the gears. I Y J Fig. 6 is a perspective view of a braking attachment. V

.Referring to the drawings, 1 indicates a base plate, generally rectangular in shape, adapted to be. secured to a suitable support by screws'frivets or similar holding devices, said plate being provided with a perforation 2 centrally disposed in a circular depression 3 provided with outwardly tapering'or flar ing sides 4, the depression in'efifect constituting the fem'alemember of a locking clutch-or brake. A thimble 5 is Secured in the opening 2 and constitutes a journal bearing for a rotary shaft 6, preferably provided on its outer end with a squared shank 7 to receive the socket of an operating handle s7.

The opposite end of the shaft 6 is reduced and has formed on the peripheral surface thereofhelically disposed'gear teeth '9, the reduced end of the shaft carrying the gear teeth extending beyond the plate 1 as illustratedinFig. 4. p

fragmentary side elevation of;

Rigidly secured on the shaft 6 is a I 8 having a bevelled or chamfered periphery,

which disk cooperates with the depression 3 and the inclined sides thereof, to constitute the male member of a locking clutch or brake of the cone type, when said parts are brought into cooperativeengagement.

Pivoted ona stud 13 mounted on the plate 1 isa gear member 12 having its peripheral edge provided withhelical teeth- 14 adapted to inter-mesh with the teeth 9 on the shaft 6. In the particular exemplification of the invefition, the gear member 12' is preferably formed as a segment'of a disk made of relatively thin metal which is capable of free rotation. on the centering stud 13.

A U-shaped bracket 10, secured to the base plate 1, is provided with an opening 11 into which the'gear end of shaft 6 projects, and also with an extended lipwhich overhangs the periplieryof gear member 12 and prevents any material lateral distortion of the edge of'said' ge'a-r memberdue to thereaction between the helical teeth of said gear member and the teeth of the drivihg gear 9.

, volves a helical driving gear 9, having rela- -tively few teeth, meshing W1tl1 a' hBl1Cal driven gear or pinion 12 of relatively large diameter and a correspondingly'large'number of teeth. \Vhen power is applied to' the shaft 6 to rotate the same in'one direction,

-As thus constituted, the mechanism inas by means of the handle .7, the reaction between the-helical teeth on the respective gear members tends to forcesaid gear mem-. bers aaway' frcmeach other in the direction of their respective axes.- R0tat1onof the shaft 6 in the opposite directiom/produces an opposite reaction between the helical teethof the respective ear members and 1 tends to move both of said members toward each other in the direction of-"their respec tivev longitudinal and parallel axes. -Any material movement of the driven gear or pinion 12. in the-direction of its axis of rotation, is piteventedby the plate- 1,-on the one hand, and'by the guard lip of the bracket 10.on the other. A limited movement of the shaft 6 and the gear 9 on the endthereof is possible, by reason of the space between the outer face of disk 8 and the adjacent face of gear member 12 It will be seen 'thereforethat the rotation of the gear 6 in one direction disengages the clutch or brake meinber 8 from its m'atingmembe'r constituted by the depression 3 with its conical side walls 4 and permits the free rotation of the shaft and the consequent driving of the pinion 12 by the helical gear 9. The 5 reverse rotation ofthe shaft 6 tends to move the said shaft in the direction of its longitudinal axis, due to the reaction between the teethon the gear members, and thereforet6 cause'the" disk member 8 to engage its mat- 10 ing clutch or look member. The frictional engagement between these elements of the clutch or brake, however, when power is apvplied to the shaft 6 to ,rotate the latter, is not sufiicient to materially interfere with the free rotation of said shaft and thefdriving of the meshing gears. On the other hand, "if the power applied to the handle to rotate said shaft is released, the reaction of the load carried by the pinion or driven 20,' ear 12, operating through the relatively Iong'lever arm, represented by the radius of the driven gear, and operatin through the intermeshed helical teeth of the gear members, will producea componentlongitudinal thrust on the shaft" 6 and thereby force thedisk S of the locking, clutch into en gagementwith the bottom and sidewalls of the-stationary member of said locking clutch, the force exerted betweenthe clutch members being proportional to the-load, so

that the greater the load the larger the force of frictional engagement between the interlocking clutch members.

It willbe seen, therefore,'th at the mech- .anism as described and illustrated permits the intermeshed gears to be operated in either direction by power applied to the shaft 6 of the driving gear, the movement applied to the driven gear being utilized for 9 any desired purpose; the mechanism. how- I ever, being automatically. locked against a movement, due to the reaction of the load operated upon by the driven gear, when the driving power is released.

.' By way of illustrationfthe invention is shown as applied, with certain accessories, for raising; lowering andlocking windows,

V but it will be understood that the invention -is not limited 'to such'specific application, but is capable of a wide variety of uses wherever gearingis employed forefiecting movement of a given part -and for efi'ectually resisting reverse movement ofthe part by the action of gravity or by other force E ,applied to the moving part in a direction which would normally movement. i

As a plied to operatingthe window of an automo 11c or si ilar purpose, a lever arm 16 is secured to gear member or pinion 12 by suitable fastening devices and, as shown, is engaged with theypintle 13 on whichYthe gear member rotates. The lower end ofthe argnjs provided with a grooved effect such reverse engage the lower edge of the glass B mounted for reciprocating movement in the framing of the door, A of the body of an automobile or..similar vehicle. counterbalance the weight of the glass B, a helical spring 20 is secured by an eye 21 to the bottom of the door framing andis attached to the gear member 12 by a hook In order to I 22 pivotally secured at 23 to the gear member 12 between the center and the periphery of the gear member. Rotation of the handle 7 inone direction rotates the gear 12 in a direction to elevate the outer end of the lever. 16 and with the latter, the glass B, the roller 17 on the lever engaging a channelshaped strip 18 secured to the lower edge of the glass. WVhen the handle is r0- 'tated in the opposite direction, the glass'will be lowered. The raisii'ig and lowering operation may be effected. to any desired extent to open or close the window wholly or partially "and as soon as the. rotatory force applied to the handle is released, the weight of the glass tends to swing the lever'16'.

aXis of rotation thereof an d forces the lock- 1 i brake member formed by the depression 3 and the tapering side walls thereof in the platefl, thereby locking the drive shaft against rotation and, holding the glass at ing clutch member 8 into engagement with the bottom and side walls of the stationary any .desired position of adjustment, and

further "movement of the glass in either direction being possible only by rotating the handle7'. "What I claim is:

1. The combination with meshing helical driving and driven gears havin axes'of rotation. extending paralel to each other, and means operative through the re action of the teeth of the gears to lock said gears against rotation, when the driving power is released and the load on the driven gear tends to. reverse the rotation of the gears.

2. The combination with meshing helical driving and driven gears having different ax'esof rotation extending parallelto each driven gear tends to'reverse the rotation of l gears.

different 3.-The combination of. meshihg helical driving and driven gears having, parallel anti-friction roller 17 which is adapted to axes of rotation, the driving gearbemg ca- -pable of limited movementlongitudinally of its axis of'rotation, a brake member secured to thedriving gear, and a cooperating stationary brake member, said brake members being engaged to lock the gears by axial movement ofthe driving gear .due to the reaction of the teeth of the gears when the driving power is released and the load on the driven gear tends tor'everse the rotation of the gears. Y The combination of anaxially shiftable drive shaft having a helical gear thereon, a helical pinion meshing with said gear and having an axis of rotation parallel with that of said shaft and'gear a brake member "fast on said shaft, and a stationary brake member cooperating therewith to lock the gears when the shaft is shifted axially by the reaction between the teeth of. the pinion and the gear when the driving'power is released .and the load on the pinion tends to rotate the latter. V

The combination of an axially shiftable drive shaft having a helical gear thereon, a helical pinion mes'hing'with said gear and having an axis of rotation parallel with that of saidwshaft and. gear, a brake disk fast to said shaft, and a stationary brake member surrounding the shaft and cooperating with the disk to lock the gears when the shaft is shifted axially by the reaction between the teeth of the pinion'a-nd the gear when th erlriving powenis released and the load on the pinion tends to rotate the latter;

6. The combinationof a support, an axially shiftable drive shaft journaled in said support and having a helical gear thereon. a helical pinion meshing with said 'gearand having an axis of rotation parallel with that pfsaid shaft and gear, a brake member fast on said shaft, and a stationary brake member on said support, said brake mem bers" cooperating to lock the gears when the shaft is shifted axially by the reaction between the teeth of the pinionand the gear when the driving power is released and the load on the pinion tends to rotate the latter.

1. The combination of a support, an axially shiftable drive shaft journaled in said support and having a helical gear thereon, a helical pinion meshing W1th $lld gear and having an axis of rotation parallel with that of said shaft and gear, a brake disk having a conical peripher fast to said shaft,

' and a stationary braking element on said support having a complementary conical rim, said brake meinberscooperatingto lock the gears when the shaft is shifted axially by the reaction between the teeth of the pin- .ion and the gear when the driving power is released and the load on the pinion tendsto rotate the latter. J

8, The combination of a base plate hav-,

ing an opening therein, abearing sleeve secured to said opening, an axially shiftab'le drive shaft journaled in said sleeve and extending through said opening, a helical gear on said shaft. a helical pinion meshing with said gear and having an axis of rotation parallel with that of saidshaft and gear, a brake disk fast to said shaft, an annular, socket in said base-plate surrounding. the opening and cooperating with the disk to lock the gearing when the shaft is shifted axially by the reaction between the teth of the pinion and the gear when the driving power is released and the load on the pinion tends to rotate the latter.

9. The combination of a base plate having an opening therein, a bearing sleeve se-' cured in said openingan axially shiftable drive shaft journaled in said sleeve and extending througlr said opening, a helicalgear 011 said shaft. ahelical pinion meshing with said gear and having an axis of rotation parallel with that of said shaft and gear, a brake disk having aconical periphery on said shaft, an annular socket having a complementary conical rimin said base plate surrounding the opening and gooper- 'ating with the disk to lock'the' gearing when the shaft is shifted axially by the reaction between the teeth of the pinion and the gear when the driving power is released and the load on the-pinion tends to r hits the latter.

\ 10. The combination with meshing helical drivingand driven gearshaving parallel axes of rotation, means operative through the reaction of the teeth of the gears to'lcck said gears against rotation when the driving power is released and the load oii the'driven gear tends to reverse the rotation of the gears, and "a lever secured to and extending from said driven gear. '11. The combination with meshing helical driving and driven gears having parallel axes of rotation.- means operative through the reaction of the teeth of the.- gears to lock said gears against. rotation when thqrhiving poweris released and the load on the drivenc gear tends to reverse the rotation of the gears, a lever secured to and extending from said driven gear,"and means attached to said driving gear to counterbalance a load supported by the free end of the lever. f

12.- The combination with meshing helical driving and driven g'ears having parallel axes of rotation, means operative through the reaction of the teeth of the gears to lock said gears against rota ion when the driving power is released and t e load on the driven gear tends to reverse the rotation of "the gears,a lever secured to and extending from said driven gear, and a spring attached to. the driven gear and to a fixed anchorage to counterbalance'a load supported by thefree end of the'lever.

13. The combination 0 axially shiftable drive shaft journaled in said support and having a helical gear thereand to a fixed anchorage to counterbalance on, a helical pinion meshing with said gear a load supported by the free end of the lever.

and having an axis of rotation parallel with 16. A window operating device compristhat of said shaft and gear, a brake member ing a gear member, a lever fixed thereto and fast on said'shaft, a stationary brake member adapted to engage and raise the window on said support, said brake members 00- when the gear is rotated in one direction, a

I operating to lock the gears when the shaft driving gear meshing with said gear memis shifted axially by the reaction between berg7i 'a lever arm secured to and extending from on, a helical pinion meshing with said gear lock the same and having aneaxls of rotation parallel with drivlng poweris released and the driving power is released and the load when the operating means for operating the driving gear, the teeth of the pinion and the gear when an automatic means for locking the gears on the pinion tends to rotate the latter and gear is released.

17. The combination with meshing driving said pinion. r and driven toothed members having different 14:. The combination of a support, an axes of rotation extending parallel to each axially shiftable drive shaft journaledin other, of means operative through ;the resaid support and having a helical gear thereactive effort of the teeth of said members to against rotation when the the driven that of said shaft and gear, a brakemember member tends to rotate the driving member.

on: said support, said brake members co- 'teeth of the pinion and the gear when 'ially shiftable drive shaft journaled in said a helical pinion meshing with said gear =pinion, and a spring attached to the pinion 1,8,The combination with meshing driving and driven toothed'members having different operating to lock the gearswhen the shaft axes of rotation extendingparallel to each isshiftedjaxially by the reaction between the Mother, of means ,operative through the rethe active efiort of the teeth of said members to "loclnthe same against rotaton when the driving power is released and the loadon the driven member tends to rotate said Inembers-anda .lever carrying the load and sefast on said shaft, a stationary brake member,

drivingpower is released and the load on the pinion tends to rotate .the latter, a lever arm secured .to and extending from said pinion, and means attached to said pinion to counterbalance a load supported by the free end cured to vsaid driven member. v ofthe lever. 7 l 19. The combination with driving and 15. The combination of a support, an ax-' driven toothed members having different axes of rotation extending parallel to each support and havinga helical gear thereon, other, of means operative-through the reacand tive effort of the teeth of said members to having an axis of rotationparallel with that look the same against rotation when the of said shaft and gear, a brake member fast driving power is released and the load on I on said shaft, a stationary brake member/ the driven member tends to reverse the rotaon said support, said brake members cooption of said members, a lever carrying the. crating to lock the gears when the shaft is load and secured to said driven member and shifted axially by the reaction between the means secured to one of said members for 85 teeth of, the pinion and the gear when the oounterbalancing-the loadzcarried by said driving power is released and the .load on lever. I w the pinion tends to rotate the latter, a lever In testimony whereofl aflix'my signature.

arm secured to and extending from said v i e FA Y O, FARWELL.

power for the driving 5. 

